Update res/values-fr/strings.xml
MessageList: add setting to allow 0 preview lines
Remember last list view state when going back to a previous message list
fragment.

Fixes issue 4854.
Show thread as unread if at least one of the messages of the thread is
unread.

Fixes issue 4759.
Merge pull request #235 from rk4an/patch-1

Update res/values-fr/strings.xml
Fix the span range for the text in front of the message preview
Merge branch 'master' of github.com:k9mail/k-9
Merge pull request #238 from maniac103/thread-unread

Show thread as unread if at least one of the messages of the thread is unread.
Merge branch 'remember-message-list-state' of git://github.com/maniac103/k-9
Refactor code to restore the list state
Restore list state when recreating MessageListFragment